<!--
 * @由于个人水平有限, 难免有些错误, 还请指点:  
 * @Author: cpu_code
 * @Date: 2020-10-19 22:44:20
 * @LastEditTime: 2020-10-19 23:03:24
 * @FilePath: \web\javascript\node\node.html
 * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
 * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
 * @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
 * @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
-->
<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>node对象</title>
        <style>
            div{
                border: 1px solid yellow;
            }

            #div1{
                width: 200px;
                height: 200px;
            }

            #div2{
                width: 100px;
                height: 100px;
            }

            #div3{
                width: 100px;
                height: 100px;
            }
        </style>
    </head>

    <body>
        <div id="div1">
            <div id="div2">div2</div>
            div1
        </div>

        <a href="javascript:void(0);" id="del">删除子节点</a>
        <a href="javascript:void(0);" id="add">添加子节点</a>
        <!--<input type="button" id="del" value="删除子节点">-->

        <script>

            //1.获取超链接
            var element_a = document.getElementById("del");
            //2.绑定单击事件
            element_a.onclick = function(){
                var div1 = document.getElementById("div1");
                var div2 = document.getElementById("div2");

                div1.removeChild(div2);
            }

            //1.获取超链接
            var element_add = document.getElementById("add");
            //2.绑定单击事件
            element_add.onclick = function(){
                var div1 = document.getElementById("div1");
                //给div1添加子节点
                //创建div节点
                var div3 = document.createElement("div");
                div3.setAttribute("id", "div3");
                div1.appendChild(div3);
            }

            /*
                超链接功能：
                    1.可以被点击：样式
                    2.点击后跳转到href指定的url

                需求：保留1功能，去掉2功能
                实现：href="javascript:void(0);"
            */

            var div2 = document.getElementById("div2");
            var div1 = div2.parentNode;

            document.write(div1);
        </script>
    </body>
</html>